Publication detail

Magnetically Separable Mixed-Phase alpha/gamma-Fe2O3 Catalyst for Photo-Fenton-like Oxidation of Rhodamine B

MAGOMEDOVA, A. ISAEV, A. ORUDZHEV, F. SOBOLA, D. KH. RABADANOV, M. RABADANOVA, A. NABI, S. ZHU, M. EMIROV, R. KH. GADZHIMAGOMEDOV, S. ALIKHANOV, N. KAVIYARASU, K.

Original Title

Magnetically Separable Mixed-Phase alpha/gamma-Fe2O3 Catalyst for Photo-Fenton-like Oxidation of Rhodamine B

Type

journal article in Web of Science

Language

English

Original Abstract

Iron oxides are widely used as catalysts for photo-Fenton-like processes for dye oxidation. In this study, we report on the synthesis of an a/?-Fe2O3 mixed-phase catalyst with magnetic properties for efficient separation. The catalyst was synthesized using glycine-nitrate precursors. The synthesized a/?-Fe2O3 samples were characterized using scanning electron microscopy, X-ray diffraction spectroscopy (XRD), Raman shift spectroscopy, X-ray photoelectron spectroscopy (XPS), and vibrating sample magnetometer (VSM). The diffraction peaks were indexed with two phases, a-Fe2O3 as the main phase (79.6 wt.%) and ?-Fe2O3 as the secondary phase (20.4 wt.%), determined using the Rietveld refinement method. The presence of Fe2+ was attributed to oxygen vacancies. The mixed-phase a/?-Fe2O3 catalyst exhibited remarkable photo-Fenton-like degradation performance for Rhodamine B (RhB) in neutral pH. The effects of operating parameters, including H2O2 concentration, catalyst concentration, and RhB concentration, on the degradation efficiency were investigated. The removal rates of color were 99.2% after 12 min at optimal conditions of photo-Fenton-like oxidation of RhB. The sample exhibited a high saturation magnetization of 28.6 emu/g. Additionally, the a/?-Fe2O3 mixed-phase catalyst showed long-term stability during recycle experiments, with only a 5% decrease in activity.

Keywords

iron oxides; a/?-Fe2O3 mixed-phase catalyst; magnetically separable; Rhodamine B; photo-Fenton-like

Authors

MAGOMEDOVA, A.; ISAEV, A.; ORUDZHEV, F.; SOBOLA, D.; KH. RABADANOV, M.; RABADANOVA, A.; NABI, S.; ZHU, M.; EMIROV, R.; KH. GADZHIMAGOMEDOV, S.; ALIKHANOV, N.; KAVIYARASU, K.

Released

11. 5. 2023

Publisher

MDPI

Location

BASEL

ISBN

2073-4344

Periodical

Catalysts

Year of study

13

Number

5

State

Swiss Confederation

Pages from

1

Pages to

13

Pages count

13

URL

https://www.mdpi.com/2073-4344/13/5/872

Full text in the Digital Library

http://hdl.handle.net/11012/213548

BibTex

@article{BUT183726,
  author="Asiyat {Magomedova} and Abdulgalim {Isaev} and Farid {Orudzhev} and Dinara {Sobola} and Murtazali {Kh. Rabadanov} and Alina {Rabadanova} and Shabanov {Nabi} and Mingshan {Zhu} and Ruslan {Emirov} and Sultanakhmed {Kh. Gadzhimagomedov} and Nariman {Alikhanov} and Kasinathan {Kaviyarasu}",
  title="Magnetically Separable Mixed-Phase alpha/gamma-Fe2O3 Catalyst for Photo-Fenton-like Oxidation of Rhodamine B",
  journal="Catalysts",
  year="2023",
  volume="13",
  number="5",
  pages="1--13",
  doi="10.3390/catal13050872",
  issn="2073-4344",
  url="https://www.mdpi.com/2073-4344/13/5/872"
}